. >>> severe flooding is a problem in northern california. highways in sonoma california are under water. and up in the mountains, up to four feet of snow expected to fall in the sierra nevada. it is the second wave of storms to hit northern california sense friday. the rainy weather also grounded dozens of flights around the san francisco bay area. the san francisco international up to 30 flights have been canceled and many more delayed. that includes incoming and departing flights. just in time for holiday travel. >> as if the holidays aren't stressful enough with other things. good luck, everybody, getting around. >>> while the west takes that beating, the gulf coast is bracing for tornadoes during this holiday weekend. >> good morning, andrew. >> much of the nation will be relatively tranquil for your holiday travels, our big unsettled area will be across portions of the south and the gulf coast especially. disturbance pushing through and strong thunderstorms late tonight in the houston area, into tomorrow. then louisiana, mississippi, al